Few Russian addresses have received as much attention as 55 Savushkina Street.

The grey four-storey office block in St Petersburg’s northwestern suburbs seems almost undeserving of the interest.

But the souls inside – busy with pro-Kremlin internet manipulation since 2011 – have ensured their building will stay in the headlines for some time to come.

An investigation has revealed more intimate details about the office – known colloquially as ‘the troll farm’.

The report – published on Tuesday by the business portal RBC – suggests that the organisation played a role in the US election campaign and its aftermath – organising as many as 40 US rallies and protests.

The report identifies 120 different groups and social media accounts used by trolls over 2016-2017.

‘The farm’ it suggests – concentrated on divisive social issues for the US – particularly civil rights.

The report describes a rally held in Charlotte on 22 October 2016 – ostensibly against police violence.

The event was held in the name of ‘BlackMatterUS’ and it seems probable many of the activists who took part did not understand the rally was unconnected with Black Lives Matter.

Or indeed – that the entire operation was being directed from St Petersburg.